Valve for air gauges



Dec.. l6, l H. vSTANLEY rr AL r1,785,658 v vALvsron AIR umass y rind rnb, 7. `192e 2 Sants-sheet 2 Patented Dec. 16, 1930 UNITEDA STATES PATENT oFFica d Howaan aniram Aim Burnss'rANLnY, or nimma, wns'r vmGiNia i VALVE FOR AIB GAUGES l Application lled February 7, 1928. Serial No. 252,503.

rThe present invention relates to improvements in the construction of pneumatic tube inflating nozzles and further pertains to no'vel means whereby the air pressure within I, a pneumatic tire may be ascertained during the inflation thereof. The particular nature of this` device involves means whereby the pressure within the pneumatic tire may be tested, without the l necessity of removing the inflating nozzle from attachment with the usual tube valve. One of the several objects of this invention is accomplished by a plun er permitting coinpressed air in the tire to ow to a gauge carla; ried by the nozzle, through the action of j. means also operable to exhaust the air from Y the gauge and simultaneously reopen the air supply line to the nozzle head.

Another important object exists in the par lui ticular arrangement of parts, rendering the device extremely convenient in use and easy of operation to produce thel several results which will become clearl comprehensible from the specification an claim to follow. la In the drawing:

Figure 1 representsthe -side elevation of the nozzle in its entiret Figure 2 represents the top view of the defvice as represented in Figure 1.

80 Figure 3 represents a side elevation of the plunger employed for controlling the several functions ofthe nozzle.

Figure 4 re resents a face view on the nozzle head disc osing the same with the valve 3.5 member removed. v

Figure 5 is an enlarged longitudinal sectional view through a fragmentary portion of the nozzle and disclosing certain novel details of construction.

Figure 6 represents a further enlarged longitudinal sectional view of a fra entary portion o f the nozzle, the same disc osing the reciprocatory plunger in open position.

Figure 7 represents substantially the same view as disclosed in Figure 6, excepting that the plunger is shown in closed position, and Figure 8 represents a sectional view vthrough the plunger, the same being taken Y on the line 8-8 of Figure 6. ce" Reference is made to the drawings wherein threads.

like numerals designate like parts. 'lhe invention includes an elongated nozzle, referably of metal, as usual, and which as its head portion 2 bent at substantially right angles to its body roper. The op osite end of this nozzle is re uced as at 3 an provided with a plurality of bevelled ribs 4 of usual construction, for the obvious urpose of retaining the fiexible hose stretc ed thereover. The bore 5 is formed centrally through the oo nozzle throughout its longitudinal length and communicates with an enlarged o ning 6 in the head 2. The head 2 is internal y threaded at its end portion to receive the threaded plug 7, which plug is formed centrally with an o5 opening 8and an inwardly disposed spider 9. The inner end of this spideris formed with -a valve seat, in which the valve head lOvis seatable, while the valve stem 11 thereof has its outer end portion normally projecting 'lo beyond the outer face of the plu 7. The coiled spring 12 is disposed aroun the stem and is adapted to normallymaintain the valve closed. i

At the top side of the nozzle and adjacent its forward end an upstanding shell 13' is pro-4 vided, and formed at its ,up er end with An internall threa ed rim 14 is ada ted to be threade to the threaded end'r of t e shell 13 for the purpose of disposing so the glass windowv in the position shown in Figure 5. The gau e 16 of conventional construction is rovidged with a threaded nipple 17 threada le within the duct 18which uct extends inwardly in substantially paralso le1 relation to the air supplybore v5. This gauge is provided with t e usual indicatingand 18, employed'for indicating the pressure affecting the gauge mechanism in respect to the scaled dial 19. Adjacent the inner end '90 1' of the enlarged portion of the nozzle, the clinder bore 20 is formed vertically through t e nozzle. The lowerv end portion of this bore is enlarged as at 21, and threaded at its end portion. telfoeeive a threaded lug 22. '03 The inner end vofthis plug is provi ed with an inwardl projecting pintle 23, adapted to vengage wit in the convolutions of the coiled spring 24. -As clearly shown in Figure 6, the duct 18 100 terminates at its rear end in communication vzo with the bore 20, while'the bore 5- also communicated with the bore 20 by passing therethrough. A cylindrical plunger 25 is adapted for snug slidable movement within the bore 20 and is provided at its lower end with a circumferential flange 26, the perimeter of which is snugly engageable of the enlarged opening 21. Extending inwardly from the flanged end of the plunger, the transverse bore 27 is formed, and registerable with the air supply bore 5. The pin 28 rojects into the vertical groove in the wall o` the nozzle 1 at the bore 20 for the obvious purpose of preventing the rotation of the plunger 25 in its movement in the bore 20. The outer end of the plunger 25 is provided with a head 29, to facilitate the actuation oftheplunger b ,the person operating the same. An upstan ing shell 30 is formedaround the plunger and in spaced relation thereto in the manner shown in Figure 6 to protect theplunger from being bent or otherwise distorted during rugged use. An elongated groove 31 is formedlongitudinally inthe plunger and at its intermediate portion, said oove being substantially arcuate in longitu inal extent.

In the operation of this nozzle, vthe operator of the same engages the head thereof over the usual pneumatic tube valve, so that the projecting end portion of the valve. stem 11 will engage the valved elementv of the pneumatic tube,'whereby both valves will be opened. This will result in the inflating of the tire tube to a point where the operator believes his tire to be sufficiently inflated. At

this point, the operator ordinarily must disengage the'nozzle for the purpose of attaching the tire by one of the conventional tir gauges now being used. l v

With the present device at hand, the o rator simply depresses the plungerA 25, wich results in the closure of the duct 5 and allowing the back pressureefrom the `tire toow through the channel 31 and into the duct 18. Obviously, the pressure of the air will register on the gauge 16, which can be noted by the operator through .the window 15, If the y pressure within the tube is sufficient, the nozzle is detached "therefrom, and by releasing theplunger 25, the same lwill assume the orlginal position shown in Figure 6. In this original josition, the air remaining in the gauge ex austs through the exposed upper end ofthe channel 31. The .plu ,22,jmay be adjusted in respect to the coile spring 24, for regulating the tension of the plunger 25. Having thus described ourl inventiomwhat is claimed as newis; l

Avalvestructure comprising a body havin 'an opening therein, .said body bein provi ed with a bore extending throng the body transversely of said opening, sa1d body said bore, and'provided with an actuating longitudinally extending channel, said body being rovided with an enlarged counter bore threa ed at its outer end and c ommunicatin with the transverse bore of the body, a hea on the element operative within the enlarged bore, spring `means operating against said head for normally maintaining the element projected outwardly so that the channel will open the duct to the atmosphere while the transverse openin in the element is alined with the opening t ru the body, and a threaded plu yfor disposition within the enlar ed bore a apted to be urged against the spring means toadjust the pressure thereof.

In testimony whereof we aix our signatures. e y

` HOWARD STANLEY.

rRUFUS STANLEY.

lll

being-provided with a duct extending from 'i said bore, a valve elementslidable within 

